Half to c



(No Model.)

' L. F. GRAMMBS.

BOX NAILING MACHINE. No. 409,145. lPazen'ed Aug. 13,1889.

UNITED STATES PATENT OEEICE.

LEVIS F. GRAMMES, OF ALLENTOVVN, PENNSYLVANIA, ASSIGNOR OF ONE- HALF TOO. J. P. BITTNER, OF SAME PLACE.

BOX-NAILING MACHINE.

SPECIFICATION forming part of Letters Patent No. 409,145, dated August13, 1889. Application filed December 17, 1887. Serial No. 258,202. (Nomodel.)

To all whom t may concern: number of drivers employed in the machine. Beit known that I, LEWIS F. GRAMMES, a I have herein shown but one slotand picking citizen of the United States, residing at Almechanism,deeming that sufcient to fully lentown, in the county of Lehigh, Stateof illustrate my invention. 55 5 Pennsylvania, have invented certain newand The table B is provided with a circular reuseful Improvements inBoX-Nailing Macess B3 at the end of the slot B', which recess chines, ofwhich the following is a specificais centrally perforated at BT for t-hereception tion, reference being had therein to the ac- 'of a screw B4,having a cylindrical body porcolnpanying drawings. tion B5. A secondperforation Bis provided 6o Io This invention has relation tobox-nailing intermediate the lower end of the wayB and machines, andamong the objects in view are the central perforation just mentioned. toprovide a picker attachment for the same Mounted within the circularrecess B3 of adapted to select and conduct nails singly the table androtatably upon the body portion from the tumbling-box to the chuck andin B5 of the screw BA1 is a picker-plate C, having 65 I5 the path of thehammer, whereby they are central perforations C', a stud O2, projectingdriven into the object thereunder. from its upper face and near the edgethere- Other objects and advantages of the invenof, a slotted extensionC3, extending from its tion will hereinafter appear, and the novelperiphery and opposite long and short pickfeatures thereof will beparticularly pointed ing fingers C'1 C5, respectively, forming an ec- 7ozo out in the claims. centric slot terminating in an opening CG. AReferring to the drawings, Figure l is a second plateD is also mountedupon the body plan view of a portion of the attachment; and portion B5of the screw Bdt and above the plate Fig. 2 a section on the line a; ofFig. 1, ad- C, which plate D is formed with a central perjacent portionsof thc nailing-machine being foration D for the reception of the screwB4, 75 2 5 shown by dotted lines. Figs. 3 and 4. are dea stop orshoulder D2, and upwardly-projecttails in plan showing the positionsoccupied in g stud D3, and long and short oppositelyby thepicking-fingers during the operation inclined picking-fingers D4 D5,respectively,

of selecting a nail. Fig. 5 is a plan of one of which fingers arearranged opposite to simithe picking-plates, and Fig. 6 a similar viewlar fingers upon the plate O, so that when op- 8o 3o ofit.s companion.`Fig. 7 is a partial rear erated or oscillated in contrary directions theview of the attachment, showing the gate emlong fingers C4 D4 of the twoplates are drawn ployed for admitting a nail to the pickingtoward andthrown away from each other, as lingers. are also the short ngers D5 C5,thus opening Like letters rindicate like parts in all the and closingthe opening C6 D of the two S 5 3 5 figures. l plates.

This attachment is especially designed to Pivoted ,at one side of theinclined table B be used in connection with my invention, as is a bar E,having a central longitudinal slot illustrated in Patent No. 249,245,though I do E, into which takes the stud D3 of the plate not limit thesame to an application to this D, and a similar slot. E2, into whichtakes the 9o 4o invention, but hold that it may be used in stud C2 ofthe plate O. A coiled retractingconnection with any box-nailing machineto spring F is connected with the stud C2 and to which it is applicable.a stud or screw F', formed at that side of the B represents an inclinedtable leading from table B opposite to t-he pivotal connection of theusual tumbling-box A, and supported in the bar or lever E. 95 4.5 anysuitable manner upon the machine. A Mounted in suitable brackets B8,projecting slot B is formed in theitable, the edges of forwardly fromthe table B, which brackets which are provided with `metal plates B2,are slotted, are sliding bars G l, having upon forming a way. The slotsB may be of any their upper faces stops G2. Vhile only one suitablenumber, as may also the picking bracket is shown, it will of course beunderno 5o mechanism hereinafter described, said slots stood that inpractice there are two, one at each and mechanism being limited merelyby the end of the table. Aretracting-spring G.3 (see dotted lines, Fig.l) connects the bar G with the bracket B9, so that the stop G2 thereofis normally held in contact with the inner side of said bracket.

Mounted in the slot G3 of the extension of the plate C is a set-screwII, which is provided wit-h a boss Il at its lower end, adapted to comeinto contact with and be actuated by one or the other of the bars G andG in aeeordanee with its location in the slot C3 through the medium ofthe stops G2 on said bars.

A space-block B, having an opening B9, registering with the opening BGin the table B, is provided at the front edge of said table and dependsItherefrom, which block is provided with a horizontal slot B10 passingtherethrough, through which passes an arm G4, the opposite end of whichis rigid with the bar G. A gate I is pivoted, as at I', upon the rearface of said space-block B, and is formed with a slot I2, into which theend of the arm G4 takes. Leading from the lower end of the opening B" inthe block B11 to a chuck J in the nailingmachine is a throat K, whichconducts the nails after being separated by the pickerplates C and Ddown to and within said chuck J and in the path of the hammer or plungerL, these parts being shown in dotted lines, Fig. 2.

The operation of the machine is as follows: The tumbling-box A, it willbe understood, is agitated by suitable mechanism, so that the nailstherein pass into the slot B of the inclined table B, the heads of thenails Z restf ing upon the flanges or plates B2 at each side of saidslot, so that the slot becomes completely filled with nails arranged inconsecutive order. The machine being put in operation, suitable cams D9D10, or other mechanism usually provided therein, first come in contactwith and operate the bar G, which, through the medium of its arm G4,actuates or oscillates the pivoted gate I, throwing the same to one sideand permitting the first of the series of nails to pass down the slot Binto contact with the forward or lon ger fin gers C4 Dl of the plates Cand D, which lingers when not actuated remain in a closed or lappedposition. As the gate opens and the first nail of the series ispermitted to come in contact with said fingers, (see Fig. 3,) the bar Gis, by suitable cams or other mechanism, pushed forward in its bearingsand carries with it the plate C, which oscillates upon the bolt B, Thismovement of the plate C also oseillates the bar E, the end of which isloosely connected with the stud C2 upon said plate. Now as the plate Cand the bar E are swung upon their pivots, said bar having theintermediate loose counection with the upper plate D, said upper plate Dis moved in a contrary direction, so that the longer fingers C4 and D4of the respective plates are withdrawn from each other, and the shorterfingers C5 D, being oppositely arranged, are thrown toward each other.This withdrawing or opening of the longer fingers permits the nail tocome in contact with said shorter fingers. By this time the bar G andthe plate C will have reached the limit of their oscillation in onedirection, and the position of the two plates will be as clearly shownin Fig. 4. The cam or other pressure against the bar G having beenremoved, the retracting-spring F will bring the parts back to theirnormal positions, which are shown in Figs. l and It is therefore plainthat in this return movement the operation just described will beIreversed-that is, the shorter iingers will iirst open or part,permitting the nail resting thercagaiust to fall through the opening C6DG into the opening B, down the throat K, and into the chuck .Lwhere itis driven by the hammer or driver L. As the shorter fingers open, thelonger fingers close, and the operation is repeated. Prior to themovement of the picker-operating bar G, or it may be at any timeprevious to the time when said bar reaches a point at which the longerfingers C4 D'1 open, the gatebar G is operated by any suitable cam orother mechanism. In its movement the gate is oscillated from over theopening B", so as to admit of a single nail passing up against thelonger fingers of the picker-plates. As soon as this is accomplished,the cam or other pressure at the end of the bar G is removed and the barand gate are drawn to their respective positions by means of theretractingspring G3. (See dotted lines, Fig. l.) As the gate is broughtto its return or normal position, it separates and passes in between theadvance nail and the remainder of the series, thus preventing theadmission of more than one nail at a single operation of thepickerplate.

The bar G is, by suitable mechanismsuch as the well-known cam wipingagainst its end-operated every second stroke, while bar G operates atevery stroke, or G may be actuated at the second, third', or fourthstroke, while G operates every stroke. The object of this is to nailbottoms or tops of boxes where it may require two nails at the sidesandfour or six at the ends. For instance, two nails are to be driveninto the sides of a box and four nails into the ends thereof. To dothis, bar G is set or connected with two picker mechanisms, so as todrop two nails at every stroke, and G is set connected with two or morepickers, so as to drop two nails at every other stroke. Therefore, whenthe side is presented to be nailed G drops its two nails and they aredriven, while G drops none. The box is then turned and the end ispresented, when both G and G droptwo nails each and the four are driven.At the next stroke the opposite side of the box is presented, and bar Gdrops two nails, as required, and G drops none. The opposite end is thenpresented, and with this stroke bars G G drop two nails each, and thefour are driven.

The importance of this improvement is' IOO lIO

readily apparent, as it saves a great deal of adjustment in changing forthe dropping of different numbers of nails at every alternate stroke,all the adjustment required being to slide the thumb-screw Il in itsslot C3, so that its lower end will be thrown in the path ot' one orboth of the stops G2 on the sliding bars G G.

Having described my invention and its operation, what I claim is l. Apicker attachment for box-nailing machines, comprising an inclinedslotted table, duplicate picker-plates mounted at the end of said tableand for relativelyopposite oscillation, and mechanism for oscillatingthe same, substantially as specified.

2. The combination, with a nailing-machine, of a picker attachmentcomprising an inclined table having a slot and duplicate picking-platesprovided with picking-fingers and nail-passages and pivoted and arrangedone upon the other at the end of said slot, and mechanism foroscillating said plates in relatively-opposite directions, substantiallyas specied.

3. The combination, in a nailing-machine, of a picker attachmentcomprising an inclined table having a slot, pivoted nail-picking platesmounted one upon the other at the end vof said slot and provided withpicking-fingers and nail-passages, and mechanism for oscillating saidplates in contrary directions, substantially as specified.

4. In a box-nailing machine, the combination of a picker attachment,comprising ar Q a locked or closed position, substantially as therefrom,and a bar pivoted to the table and slotted for the reception of thestuds, whereby when one of said plates is oscillated in one directionits companion is oscillated in an opposite direction,substantially asspecified.

8. In a picker attachment for box-nailing machines, the combination of aslotted inclined table,with pivoted picker-plates mounted one upon theother at the end of said slot and provided with oppositely-disposed longand short picking-fingers and with studs, and a plate-operating barslotted to receive said studs, substantially as specified.

9. In a box-nailing machine, the combination of an inclined table havinga slot and provided with pivoted operatively-connected picking-plateshaving picking-fingers, one of said plates having a slotted extension,with anadj ustable bolt mounted in said slot, and oscillating barsmounted in brackets below the same and provided with lugs for coming incontact with and operating said bolt, substantially as speciiied.

10. In a box-nailing machine, the combination of an inclined tablehaving pickingplates pivoted at the end thereof, and having a gatepivoted in rear of said plates, with oscillating bars, one of whichoperates said plates and the other the gate, substantially as speciiied.

Il. The combination of the inclined table B, having the slot B', withthe plates C and D, pivoted, as at D4, thereon and formed with the longand short fingers C4 C5 and D4 D5, and having the openings C G6 and D D,substantially as specified.

l2. The combination ot the table B, having the slot D', and the plates Cand D, pivoted thereon, with the bar E, slotted as at E E2 and mountedon said plate, and the spring F, substantially as speciiied.

13. The combination of the inclined table B, slotted as at B', and theplates C and D, pivoted as at B4 at the end of said slots, the bolt II,mounted in the plate C, and the bar G having the lug G2 and spring G3,substantially as specified.

li. The combination of the inclined table B, slotted and provided withthe pivoted plates C and D, the bar E, connecting the same with the gateI, pivoted as at I', slotted as at I2, and the bars G and G', thelatterhaving arm G1 for operating said gate, substantially as specified.

In testimony whereof I aiiix my si gnature in presence of two witnesses.

LEVIS F. GRAMMES.

Witnesses:

JACOB D. BURGER, EDWARD II. RENINGER.

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